The topicgroup element identifies a group of topics (such as a concepts, tasks, or references) or other resources. A topicgroup can contain other topicgroup elements, allowing you to express navigation or table-of-contents hierarchies, as well as implying relationships between the containing topicgroup and its children. You can set the collection-type of a container topicgroup to determine how its children are related to each other. Relationships end up expressed as links in the output (with each participant in a relationship having links to the other participants by default).
Insert Topic
Group action from the main toolbar (or from the
Insert submenu of the contextual menu). Those actions open the Insert Topic Group dialog box that allows you to easily insert a topicgroup element and various attributes can be specified (such as Collection type, Type, Scope, Format, etc.)
Figure: Insert Topic Group Dialog Box